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I have known him for a long time vs I know him since a long time

'I have known him for a long time' is a correct phrase, but 'I know him since a long time' is not. The correct phrase indicates a duration of acquaintance, while the incorrect one has a mistake in the preposition used with 'time.'
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Explained by Gregg
Editor at TextRanch

Last updated: July 02, 2024 • 165489 views

I have known him for a long time

This phrase is correct and commonly used in English to indicate a long duration of acquaintance.

This phrase is used to express that you have been acquainted with someone for an extended period of time.

Examples:

  • I have known him for a long time, and we have a great friendship.
  • She has known the answer for a long time, but she didn't want to reveal it.
  • They have known each other for a long time, so they understand each other well.
  • May 27, 2022 ... I have known him for a long time. There doesn't seem to be any doubt that 2 is perfectly correct and perfectly idiomatic; however, I'm not ...
  • Nov 25, 2020 ... "I have known him for a long time" makes more sense if the person is alive and you have an ongoing relationship with him.
  • Oct 29, 2021 ... I have known him (for) a long time. /I´m not sure here if "for" can be left out or not/ Thank you :). owlman5. Senior Member. Colorado.
  • Mar 29, 2013 ... We are both virgins (he does have more experience), and while I have known him for a long time, I don't know him as well as I'd like. I want ...
  • May 31, 2016 ... I want to say in German I have known him for a long time. In this context I met somebody five years ago and the person has been my acquaintance since.
  • Jul 25, 2024 ... ... I HAVE KNOWN HIM FOR A LONG TIME WHEN WE WOULD MEET AT TAMMY'S HOUSE FOR EASTER GONE BUT NEVER FORGOTTEN CELEBRATE WITH YOUR DAUGHTER. Randy ...
  • I just want to say that from all this you would gather I have known him for a long time. I have. I have known him since before most of you were born, at ...
  • Oct 13, 2021 ... Today I went on an outing with a friend and his young daughter. My friend is in his 30's and I have known him for a long time.
  • Feb 28, 2024 ... I have known him for a long time. He is now in heaven with all great angels. Praying for all friends and family and my daughter and ...
  • We are both virgins (he does have more experience), and while I have known him for a long time, I don't know him as well as I'd like. I want to wait until ...

Alternatives:

  • I have been acquainted with him for a long time.
  • I have been friends with him for a long time.
  • I have known him a long time.
  • I have known him for ages.
  • I have known him for a while.

I know him since a long time

This phrase is incorrect in English due to the incorrect preposition 'since' used with 'a long time.'

  • Apr 23, 2010 ... ... I know him since a long time"? and is there any difference if, instead of "a long of time" I say a specif date? There isn't really any ...
  • Apr 5, 2023 ... 20 votes, 42 comments. One of my friends is selling his Honda CBR 250R ABS that he bought in 2013 or 2014. I know him since a long time and ...
  • Feb 25, 2020 ... I know him since a long time. He texts me, I text him, since we are at different levels and we are playing different sets of tournaments ...
  • Feb 9, 2017 ... I know him since a long time and he has won several awards at Math Competitions in high school. Having been exposed to Discrete Mathematics ...
  • Apr 5, 2017 ... I saw an exposition of this great photographer. I know him since a long time and probably he is my favorite artist in the field of nude and glamour.
  • I know him since a long time a very kind humble and ambitious person wish him all the best go on brother Kamal sky is the limit great achievement.
  • Aug 5, 2021 ... I know him since a long time a very kind humble and ambitious person wish him all the best go on brother Kamal sky is the limit great ...
  • I know him since a long time. A good thing that i found in him is he never keeps his work in between . If he accept the task then he gives his full effort ...
  • Oct 3, 2023 ... I know him since a long time. She's a magnificent person. He adapted very quickly to the team and the club. He feels very good, he is happy ...

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